Fluid conduit cover installation devices, systems and methods

ABSTRACT

A crimper die set for assembling a safety hose sleeve system includes an upper die comprising an upper curved compressive face, upper recess walls extending contiguous from the upper compressive face at an acute angel to the upper compressive face, each defining a portion of a cavity Thrust plate slots extend upward from ends of the upper recess walls. A lower die comprises a lower curved compressive face, lower recess walls extend contiguous from the lower compressive face at an acute angel to the lower compressive face and define another portion of each cavity. Lower thrust plate slots extend downward from an end of the lower recess walls, distal from the lower compressive face. Thrust plates extend from the lower thrust plate slot into the upper thrust plate slot, across the cavity at an acute angle to each of the recess walls, defining an outer abutment of the cavity.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of U.S. Provisional Application No.61/205,057, filed Jan. 14, 2009, also entitled Fluid Conduit CoverInstallation Devices, Systems and Methods, which is also incorporatedherein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to pressurized conduits such ashoses and tubes, more particularly to devices, systems and methods forinstalling sleeve and collar safety assemblies that encloses the lengthof a high pressure conduit sleeves to protect against human injury andloss of life due to catastrophic failures in the form of bursts orpin-hole failures in such high pressure fluid conduits.

2. Description of the Prior Art

As is well known within the hydraulics industry, injury resulting fromhose bursts and pin-hole leaks can occur in a matter of milliseconds.Hydraulic systems may operate at very high pressures and a leak ofpressurized fluid can penetrate the skin, causing severe tissue damageand burns. ISO 3457, EN474-1, and similar so called “line of sight”protection standards or guidelines state that for hoses carryingmaterial (a fluid) at a pressure of 725 pounds per square inch (psi) orhigher, wherein the hose assembly is located within one meter of anoperator, or if the material carried within the hose exceeds 50 degreesCelsius, protection is required.

SUMMARY

The present invention is directed to devices, systems and methods forinstalling sleeve and collar safety assemblies that enclose the lengthof a high pressure conduit to protect against human injury and loss oflife due to catastrophic failures in the form of bursts or pin-holefailures in such high pressure fluid conduits.

Related U.S. Provisional Application No. 61/068,538, filed Mar. 7, 2008,and U.S. application Ser. No. 12/290,172, filed Oct. 28, 2008, bothentitled “Safety and Indication Apparatus, Systems and Methods for HighPressure Conduits,” are both incorporated herein by reference. Theseapplications disclose safety and indication apparatus, systems andmethods for high pressure conduits, which provide operator protection,and preferably a warning, after a high pressure conduit has incurreddamage in the form of a burst, pin-hole failure, or other damage.Conduit systems disclosed in these applications comprise a high pressureconduit, with an impervious sleeve disposed over the conduit. Acoupling, or the like is typically disposed on each end of such aconduit and a collar may be disposed on each end of the sleeve. Thecollar may be compressed to secure the end of the sleeve between thecollar and a ferrule that secures the coupling in the end of theconduit. This compression also preferably defines ends of a fluidchannel, defined by an interstitial space between the conduit and thesleeve. The present inventive devices, systems and methods are directedto installing such sleeve and collar safety assemblies.

In accordance with embodiments of the present invention a sleeveinstallation guide might comprise a body defining a generallysymmetrical sleeve receptive passage therethrough. The passagepreferably comprises a transverse elongated slot with guide channelsdefined in a top and a bottom of the passage. The passage may be flaredat an entrance opening of the guide and is preferably tapered from theentrance of the guide to an outlet of the guide.

A method for handling a sleeve in accordance with the present inventionmight include pressing against “edges” of flat sleeve stock, to flattenit in the opposite direction of its natural shape. Then the re-shapedsleeve stock may be further flattened with a sleeve guide, such as byaligning flattened edges of the sleeve stock with guide channels definedin the top and bottom of a passage through a body of the guide, to pushthe edges of the sleeve stock toward each other. The sleeve stock is fedinto the opening of the sleeve guide, compressing the sleeve andallowing the edges of the sleeve to ride against the guide channels. Thecompressed sleeve exiting the guide may be cut using a heated devicethat fuses the material comprising the sleeve stock. The aforementionededges of the sleeve stock may be one or two longitudinal seams of thesleeve or longitudinal folds or creases of the sleeve.

Hence, a method for disposing a sleeve on a fluid conduit might includepositioning a sleeve through lead rollers, pressing sleeve edgestogether to flatten the sleeve against its normal geometry, aligning theflattened sleeve with opposing guide channels defined in an passagethrough a sleeve guide, feeding the sleeve stock through the passage,and compressing the sleeve in the passage, letting the edges of thesleeve ride against the guide channels to open the sleeve. A length ofthe compressed sleeve exiting the guide may be cut using a heated devicethat fuses the material comprising the sleeve stock around acircumference of the sleeve, leaving an inside of the sleeve clear toreceive fluid conduit. Thereafter, a collar may be disposed around anend of the cut sleeve and over the conduit, then compressed, with an endof the sleeve captured between the collar and end of the conduit. Asmentioned, this compressing preferably defines at least one raisedportion in the collar.

Thus, in accordance with the present invention, a system for installinga fluid conduit cover might include a sleeve guide comprising a bodydefining a generally symmetrical sleeve receptive passage therethrough.The passage might comprise a transverse elongated slot with opposingguide channels defined in the passage. A plurality of lead rollers orguide pins may be positioned at predetermined distances from the guide,aligning the sleeve, with edges of the sleeve indexed with the guidechannels, opening the sleeve as the sleeve is passed through the guide.Preferably, the rollers/pins and guide are mounted on a tabletop orsimilar structure. A spool may be used to provide sleeve stock to thesystem. Also, as mentioned above, a heated device, such as a heat knife,may be employed to cut a length of the sleeve and fuse the materialcomprising the sleeve. Further, a press may be used in embodiments ofthis system for compressing a collar with an end of the sleeve capturedbetween the collar and the conduit, or a coupling disposed on an end ofthe conduit.

Such a press might employ complementary dies which define at least oneraised portion in the collar providing a fluid flow passage from aninterstitial space between the conduit and the sleeve. Thrust plates maybe indexed between the dies. These thrust plates may operate to helpdefine and retain the aforementioned collar raised portions. The pressmight be a mechanically operated press employing mechanical leverage tocompress the dies. In such an embodiment, a torque calibrated handle,similar to a torque wrench, may be used to operate the press, in orderto monitor the degree of compression applied to the collar.Alternatively, and in some cases preferably a hydraulic press might beused to compress the dies.

Regardless, embodiments of a die set for compressing a collar with anend of the sleeve captured between the collar and the conduit, or acoupling disposed on an end of the conduit in accordance with thepresent systems and methods preferably employs a dies set comprisingcomplementary dies which define at least one raised portion in thecollar providing a fluid flow passage from an interstitial space betweenthe conduit and the sleeve. Such dies may be indexed with one anotherusing a thrust plate or the like.

Thus, in accordance with embodiments of the present invention a die setfor completing assembly of a safety hose sleeve system might include anupper die having an upper curved compressive face and a pair of upperrecess walls, one extending contiguous from the upper compressive faceat a reflex angle to the upper compressive face at each end of the uppercompressive face. Each of these upper recess walls define an upper wallof a cavity at each end of the upper compressive face. The upper diealso comprises a pair of upper thrust plate slots, each extending upwardfrom an end of each of the upper recess walls, distal from the uppercompressive face. The die set also preferably includes a lower diedefining a lower curved compressive face and a pair of lower recesswalls, one extending contiguous from the lower compressive face at areflex angle to the lower compressive face at each end of the lowercompressive face. Each of these lower recess walls define an lower wallof a cavity at each end of the lower compressive face. The lower diealso comprises a pair of lower thrust plate slots, each extendingdownward from an end of each of the lower recess walls, distal from thelower compressive face. A thrust plate extends from each lower thrustplate slot into the corresponding upper thrust plate slot, across eachcavity at an acute angle to each of the recess walls, defining an outerabutment of the cavity.

Each of the dies may be slideably disposed on a pair of spaced apartfasteners, such as through-bolts, and a spring may be disposed on eachof the fasteners, between the dies, spring biasing the dies apart. Thethrust plates are preferably of a sufficient length that they eachextend between the dies when the dies are biased apart, but short enoughto allow the dies to meet. The die set may be mounted to a base platefor ease of use with a press.

Thus a method for completing assembly of a safety hose sleeve systemmight include disposing a collar, which is disposed over the end of thesafety sleeve which in turn is disposed over a fluid conduit, betweencurved compressive faces of a pair of spaced apart dies of a die set.The collar is then compressed with at least one portion of the collarcompressed by the curved compressive faces to capture an end of thesleeve between the collar and an end of the conduit. However,preferably, opposite portions of the collar are compressed, eachcapturing an opposite side of the sleeve between the collar and an endof the conduit. Regardless, at least one other portion of the collar ispressed into a cavity defined by the dies coming together to form atleast one raised portion in the collar that provides a fluid flow pathfrom an interstitial space defined between the sleeve and the conduit.However, preferably, opposite portions of the collar form oppositelydisposed raised portions in the collar to provide fluid flow paths froman interstitial space defined between the sleeve and the conduit.

The foregoing has outlined rather broadly the features and technicaladvantages of the present invention in order that the detaileddescription of the invention that follows may be better understood.Additional features and advantages of the invention will be describedhereinafter which form the subject of the claims of the invention. Itshould be appreciated by those skilled in the art that the conceptionand specific embodiment disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present invention. It should also be realized by thoseskilled in the art that such equivalent constructions do not depart fromthe spirit and scope of the invention as set forth in the appendedclaims. The novel features which are believed to be characteristic ofthe invention, both as to its organization and method of operation,together with further objects and advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. It is to be expressly understood, however, thateach of the figures is provided for the purpose of illustration anddescription only and is not intended as a definition of the limits ofthe present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and form part ofthe specification in which like numerals designate like parts,illustrate embodiments of the present invention and together with thedescription, serve to explain the principles of the invention. In thedrawings:

FIG. 1 is a perspective view of an embodiment of a fluid conduit coverinstallation system employing a guide and rollers mounted on a tabletop;

FIG. 2 is another perspective view of the system embodiment of FIG. 1;

FIG. 3 is a perspective view of a top half of a sleeve guide;

FIG. 4 is a perspective view of a bottom half of a sleeve guide;

FIG. 5 is a fragmented, generally cross-sectional, view of a sleeveguide assembled from the halves shown in FIGS. 3 and 4;

FIG. 6 is a fragmented perspective view of a the embodiment of a fluidconduit cover installation system shown in FIGS. 1 and 2 with a lengthof hose sleeving shown feed through the rollers and guide;

FIG. 7 is a perspective view of an embodiment of a manually operatedpress for use in a fluid conduit cover installation system or method;

FIG. 8 is a perspective view of an embodiment of a hydraulic press foruse in a fluid conduit cover installation system or method;

FIG. 9 is a partially fragmented perspective view of an open die set foruse in a fluid conduit cover installation press;

FIG. 10 is a partially fragmented perspective view of a closed die setfor use in a fluid conduit cover installation press; and

FIG. 11 is a fragmented perspective view of an end portion of a hoseshowing a sleeve crimped onto the hose in accordance with the presentinvention.

DETAILED DESCRIPTION

The present devices, systems and methods may be used to install a sleeveand collar safety assembly that encloses the length of a high pressureconduit to protect against human injury and loss of life due tocatastrophic failures in the form of bursts or pin-hole failures in suchhigh pressure fluid conduits. These sleeve and collar assemblies act asa safety and indication apparatus or system for the high pressureconduits. These conduit systems comprise a high pressure conduit, withan impervious sleeve disposed over the conduit. A coupling, or the likeis typically disposed on each end of such a conduit and a collar may bedisposed on each end of the sleeve. In accordance with embodiments ofthe present invention the collar may be compressed to secure the end ofthe sleeve between the collar and a ferrule that secures the coupling inthe end of the conduit. This compression also preferably defines ends ofa fluid channel, defined by an interstitial space between the conduitand the sleeve.

FIGS. 1 and 2 are perspective views of an embodiment of fluid conduitcover installation system 100 employing guide 101 and rollers 105-107mounted on surface or table top 110. Sleeve guide 101 preferablycomprises a body, which defines generally symmetrical sleeve receptivepassage 112 therethrough. The passage might take the form of atransverse elongated slot with opposing guide channels 114 and 115defined in the passage, preferably in the bottom and the top of thepassage. Passage 112 may be flared at entrance opening 117 and ispreferably tapered from entrance 117 to outlet 118.

A shown in greater detail in FIGS. 3, 4 and 5, the body of sleeve guide101 may be formed from two, generally symmetrical halves 300 and 400.FIG. 3 is a perspective view of top half 300 of sleeve guide 101, whileFIG. 4 is a perspective view of bottom half 400 of sleeve guide 101.FIG. 5 is a fragmented, generally cross-sectional view of sleeve guide10, such as it may be assembled from halves 300 and 400 of FIGS. 3 and4. While shown in the drawings as comprising generally symmetrical topand bottom halves, the body of a sleeve guide of the present inventioncould clearly be defined in any number of manners, such as from a singlepiece of material or from any number of split parts bolted or otherwisesecured together. The guide may be made from any number of materialsusing any number of methods or process. For example, the guide may bemachined, cast or forged from metal, or molded from a somewhat rigidplastic.

As noted, system 100, might also employ a plurality of lead rollers orguide pins (105-107), positioned at predetermined distances from guide101. As best seen in FIG. 6, pins 105-107 preferably align sleeve 601,with edges 603 and 605 of sleeve 601 indexed with guide channels 114 and115, opening sleeve 601 as it is passed through guide 101 for deploymenton conduit 610.

Preferably, rollers/pins 105-107 and guide 101 are mounted on a tabletop110 or similar structure. Which may provide threaded orifices, oranalogous mechanisms, for securing pins 105-107, guide 101 and possiblyother system elements to the tabletop in a desired spatial arrangement.A spool (not shown) may be used to provide sleeve stock to the system.Also, as mentioned above, a heated device 615, such as a heat knife, maybe employed to cut a length of the sleeve and fuse the materialcomprising the sleeve.

With attention directed to FIG. 6, an embodiment of fluid conduit coverinstallation system 100 of FIGS. 1 and 2 is shown practicing a methodfor handling sleeve 601 in accordance with the present invention, suchas to dispose sleeve 601 on fluid conduit 610. Sleeve 601 is positionedin and run through a series of rollers 105-107 to provide tension onsleeve 601 and to keep it in a vertical position before flattening.Optionally, a small metal or plastic ball (not visible) may be insertedinside sleeve 601, preferably after rollers 106 and 107, to help breakapart any filaments that may occasionally hold sleeve 601 closed.Exiting rollers 106 and 107, edges 603 and 605 of sleeve stock 601 arepressed toward one another to flatten the sleeve against its normalgeometry, and the flattened sleeve is fed into sleeve guide 101, withtop edge 603 aligned with top channel 115 of sleeve guide 101 and bottomedge 605 aligned with bottom guide channel 114. Edge 603 and/or 605 ofthe sleeve stock may be a longitudinal seam of the sleeve and/or alongitudinal fold or crease of the sleeve. Sleeve stock 601 is fed intoopening 117 of sleeve guide 101, allowing the edges of the sleeve toride against guide channels 114 and 115 as it is fed or drawn throughguide 101, compressing the sleeve. Feeding sleeve stock 601 throughguide passage 112 compresses the sleeve in the passage, with edges 603and 605 of sleeve 601 riding against guide channels 114 and 115, opensthe sleeve. The opened sleeve exiting guide outlet 118 may be cut to adesired length using heated cutting device 615 that fuses the materialcomprising sleeve stock 601 around a circumference of the sleeve,leaving an inside of the sleeve clear to receive fluid conduit 610.Thereafter, as discussed in greater detail below a collar may bedisposed around an end of the cut sleeve and over conduit 610, thencompressed, with an end of sleeve 601 captured between the collar andend of conduit 610. This compressing preferably defines at least oneraised portion in the collar providing a fluid flow path from aninterstitial space between conduit 610 and sleeve 601.

Turning now to FIGS. 7 through 11. Press 700 or 800 of FIGS. 7 and 8,respectively, or other compressive mechanisms, may be used inembodiments of this system for compressing collar 1101 (FIG. 11) with anend of sleeve 601 captured between collar 1101 and conduit 610, orcoupling 1105 disposed on an end of the conduit. The press might be amechanically operated press, such as press 700 of FIG. 7, employingmechanical leverage to compress dies 710 (FIGS. 9 and 10). In such amechanical press embodiment, a torque calibrated handle, similar to atorque wrench, may be used to operate the press, in order to monitor thedegree of compression applied to the collar. Alternatively, and in somecases preferably, a powered press, such as hydraulic press 800 of FIG. 8might be used to compress dies 710. Regardless, the press employedpreferably employs complementary die set 710 which defines at least oneraised portion 1112 in collar 701 to provide a fluid flow passage 1125from an interstitial space between conduit 610 and sleeve 601.

FIG. 9 is a perspective view of open die set 710, while FIG. 10 is aperspective view of die set 710 closed. Die set 710 is preferablymade-up of a pair of generally complimentary dies 715 and 717. However,die set 710 could be made up of any number of dies adapted to providethe desired crimping of collar 1101. In the illustrated embodiment ofFIGS. 7 and 8 thrust plates 720 and 721 may be indexed between dies 715and 717 to maintain alignment of the dies. The dies themselves define agenerally curved compressive face 725 and 727 which bears-on andcompressed collar 1101 to secure sleeve 601 to hose 610 or fitting 1105.Each die also defines at least a portion of a cavity 730 and 732 used toform raised portion 1112 in collar 701 during compression of collar 701.Cavities 730 and 732 are illustrated as having a generally trapezoidalshape to facilitate formation of the raised portion shape shown in FIG.11. However, raised portion 1112 could have any number of shapes, aslong as a fluid flow passage from the interstitial space between conduit610 and sleeve 601 is provided. Correspondingly cavities could haveshapes to provide these alternative shapes. As illustrated thrust plates720 and 721 may be disposed in thrust plate slots and operate to helpdefine and retain collar raised portions 1112. Die set 710 is shown asbeing spring loaded. This facilitates use of the dies, for exampleproviding opening of the dies following crimping to make removal of thecrimped hose assembly from the press easier, and assisting retention ofthe dies in the press. The die set may be mounted to base plate 750 forease of use with a press. The dies are described as “complementary” inthat they cooperate to form the desired shape for a collar. Theillustrated die set is a pair of dies having generally reflected shapes,each making up a half of the desired result shape of the collar.

Thus, in accordance with embodiments of the present invention a die setfor completing assembly of a safety hose sleeve system, as shown inFIGS. 9 and 10, might include an upper die 715 having an upper curvedcompressive face 725 and a pair of upper recess walls 741 and 742, oneextending contiguous from the upper compressive face 725 at a reflexangle to the upper compressive face at each end of the upper compressiveface. Upper recess walls 741 and 742 define an upper wall of cavities730 and 732, respectively. The upper die 715 also comprises a pair ofupper thrust plate slots 746 and 747, each extending upward from an endof each of the upper recess walls, distal from the upper compressiveface 725. The die set also preferably includes a lower die 717 defininga lower curved compressive face 727 and a pair of lower recess walls 743and 744, one extending contiguous from the lower compressive face 727 ata reflex angle to the lower compressive face at each end of the lowercompressive face. Lower recess walls 743 and 744 define a lower wall ofcavities 730 and 732, respectively. The lower die 717 also comprises apair of lower thrust plate slots 748 and 749, each extending downwardfrom an end of each of the lower recess walls 743 and 744, distal fromthe lower compressive face 727. Thrust plates 721 and 720 extend fromeach lower thrust plate slot (748 and 749, respectively) into thecorresponding upper thrust plate slot (746 and 747, respectively),across each cavity (730 and 732, respectively) at an acute angle to eachof the upper recess walls (741 and 742, respectively), and at an acuteangle to each of the lower recess walls (743 and 744, respectively),defining an outer abutment of each cavity. One of the four acute anglesis indicated at 745 in FIG. 10. One of the four reflex angles isindicated at 751 in FIG. 10. “Acute” and “reflex” herein refers tointerior angles of the cavity shape defined by the die set.

Although the present invention and its advantages have been described indetail, it should be understood that various changes, substitutions andalterations can be made herein without departing from the spirit andscope of the invention as defined by the appended claims. Moreover, thescope of the present application is not intended to be limited to theparticular embodiments of the process, machine, manufacture, compositionof matter, means, methods and steps described in the specification. Asone of ordinary skill in the art will readily appreciate from thedisclosure of the present invention, processes, machines, manufacture,compositions of matter, means, methods, or steps, presently existing orlater to be developed that perform substantially the same function orachieve substantially the same result as the corresponding embodimentsdescribed herein may be utilized according to the present invention.Accordingly, the appended claims are intended to include within theirscope such processes, machines, manufacture, compositions of matter,means, methods, or steps.

What is claimed is:
 1. A crimper die set for assembling a safety hosesleeve system, said crimper die set comprising a pair of complimentarydies, each of said dies comprising a curved compressive face and atleast a portion of a cavity contiguous with said compressive face;wherein said cavity comprises at least one recess defined by each diethat corresponds with a recess defined by the other die when said diesare brought together; and wherein each said recess defines at least onewall extending generally contiguous to and at a reflex angle from an endof said curved compressive face; the die set further comprising at leastone thrust plate extending from one die into a slot defined in the otherdie, wherein said thrust plate extends across said cavity at an acuteangle to said wall.
 2. The die set of claim 1, wherein said thrust plateextends from a slot defined in said one die into said slot defined insaid other die.
 3. The die set of claim 1, wherein said thrust platedefines an outer abutment of said cavity.
 4. A crimper die set forassembling a safety hose sleeve system, said crimper die set comprising:an upper die comprising: an upper curved compressive face; at least oneupper recess wall extending contiguous from said upper compressive faceat a reflex angle to said upper compressive face and defining at least aportion of a cavity; at least one upper thrust plate slot extendingupward from an end of said upper recess wall, distal from said uppercompressive face; a lower die comprising: a lower curved compressiveface; a lower recess wall extending contiguous from said lowercompressive face at a reflex angle to said lower compressive face anddefining another portion of said cavity; at least one lower thrust plateslot extending downward from an end of said lower recess wall, distalfrom said lower compressive face; at least one thrust plate extendingfrom said lower thrust plate slot into said upper thrust plate slot,across said cavity at an acute angle to each of said recess walls,defining an outer abutment of said cavity.
 5. The die set of claim 4,further comprising at least one spring disposed between said dies,biasing said dies apart.
 6. The die set of claim 5, wherein said thrustplate is of a sufficient length that it extends between the dies whensaid dies are biased apart.
 7. The die set of claim 5, wherein said atleast one spring comprises a pair of springs.
 8. The die set of claim 7,wherein each of said dies is slideably disposed on a pair of spacedapart fasteners and one spring of said pair of said springs is disposedon each of said fasteners, between said dies, spring biasing said diesapart.
 9. The die set of claim 4, further comprising a base plate towhich said lower die is mounted.
 10. The die set of claim 4, wherein:said at least one upper recess wall comprises a pair of upper recesswalls, one extending contiguous from said upper compressive face at areflex angle to said upper compressive face at each end of said uppercompressive face, each defining an upper wall of a cavity at each end ofsaid upper compressive face; and said at least one lower recess wallcomprises a pair of lower recess walls, one extending contiguous fromsaid lower compressive face at a reflex angle to said lower compressiveface at each end of said lower compressive face, each defining a lowerwall of said cavity at each end of said lower compressive face.
 11. Thedie set of claim 10, wherein: said at least one upper thrust plate slotcomprises a pair of upper thrust plate slots, each extending upward froman end of each of said upper recess walls, distal from said uppercompressive face; and said at least one lower thrust plate slotcomprises a pair of lower thrust plate slots, each extending upward froman end of each of said lower recess walls, distal from said lowercompressive face.
 12. The die set of claim 11 wherein: said at least onethrust plate comprises a pair of thrust plates, each extending from oneof said lower thrust plate slots into a corresponding one of said upperthrust plate slots, across each of said cavities at an acute angle tosaid recess walls, each defining an outer abutment of one of saidcavities.